Constructional material



Patented Dec. 22, 1936 PATENT 'OFFICE 2,065,439 coNsTRUc'sIoNAL MATERIAL Albert C. Fischer,

Philip Carey Manu poration of Ohio 'cago, Ill., assignor to The turing Company, a cor- No Drawing. Original application august 15,

1927, Serial No. 213,189. Divided and this-application November 19, 1932, Serial No.-643,546

2 Claims.

This invention relates to constructional material, such as, roofing material, insulating material, tapes, shingles, packing and the like.

This case .is a division of application Serial No. 213,189, filed August 15, 1927.

The object of'the present invention is to provide constructional materials having a fibrous base saturated with a waterproof solution. The saturated material may then be coated with a viscous material to protect the saturant and also to provide a substantially adhesive face. The saturated sheet may also be provided with a normally lasting adhesive substance, sticky to the touch, so that when the sheets are formed and rolled into package form or placed face to face in contact with a similar sheet for packing and storing and transportation, they may be unrolled or pulled apart readily without tearing or damaging, and can be installed in tacky condition. In this instance the tacky coating permits the facile separation of the contacting vehicle surfaces, the line of cleavage passing through the mastic itself. The vehicle thus provided with a lasting adhesive, mastic coating is particularly adapted to act as a packing for various types of installation, not only because of the waterproofing quality of the mastic, but also because of its pronounced and lasting quality of adhesiveness and further because of its plasticity.

A further object of my invention resides in providing a constructional material having an outer facing of lasting adhesiveness, sticky to the touch.

In the present invention the vehicle may consist of sheets, strips, or slabs of tar paper, felt,

fabric, fibers or other preferred material.

In the present invention the saturant forthe vehicle consistsof a mastic of 80 per cent kerosane and 20 per cent bitumen, the vehicle when saturated being coated with a viscous oil, such as, castor oil, or the like. If desired, higher volatile oils may be used in lieu-of kerosene, such as, naphtha, turpentine, etc. The use of these saturants is especially suitable for roofing tapes and other purposes where a soft pliable body is desired.

Instead of coating this vehicle thus saturated with a castor oil, as above set forth, I may coat' it with a slow-drying, tacky bituminous, vegetable or animal substance or combination of two or more, which approximates )the following specifications, or may be more or less fluid:

(1) The consistency at '77 degrees F. should be below 7.0.

(2) The susceptibility factor should be as low as possible, preferably under 25.

(3) The ductility at 7'7 degrees F. should be as high as possible and preferably over 25 centimeters.

(4) Fusing point by K 8: S method should be between 80 degrees and .100 degrees F.

(5) It should appear tacky and adhesive at normal temperature and retain this property as long as possible on exposure to air.

This formula is merely a standard and other formulas more or less fluid may be used with or without a suitable filler as a flow retarder, or the flow tendency may be stopped by using a nonflowing gummy substance in combination.

It will be understood that my invention contemplates constructional material, the adhesiveness of which serves to hold said material in place in distinction to other materials which involve the use of pitch, or other material, mop- I ped on at the time of assembling the material. This is especially true in the application of the invention to roofing sheets, for the purpose of holding the sheets of roofing material in place. It will be understood that after two sheets of building material according to the present invention have been separated, the adhesive surface of one sheet will be placed in contact with the non-adhesive surface'of another sheet. The adhesive or mastic will cause a union with nonadhesive surfaces to which it is applied, which union may be made very excellent by means of rolling and which will improve in the course of time.

It will also be understood that if it should be found that the adhesive surface of a sheet should become dried out, a solvent such as toluol, benzol, kerosene. or cotton oil, may be used to bring the sheet back into adhesive state.

I claim:

1. constructional material comprising a vehicle saturated with= bituminous saturant containing a solven't and coated witha slow-drying, tacky substance.

21"A roofing tape saturated with a saturant containing a solvent and coated with a slowdrying, tacky substance.

ALBERT c. mscrma. 

